Finding the Third Proportional to 1,219.50 and 1,939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,219.50 : 1,939.50 = 1,939.50 : x
2. Step 2: Convert to fraction form
   1,219.50/1,939.50 = 1,939.50/x
3. Step 3: Cross multiply
   1,219.50x = 1,939.50 × 1,939.50
4. Step 4: Simplify right side
   1,219.50x = 3,761,660.25
5. Step 5: Solve for x
   x = 3,761,660.25/1,219.50
6. Step 6: Final answer
   x = 3,084.59